Sorry this is probably a noob question. i just wanted confirmation.
I'm running Factory HU into a DSP Highlevel. but i'm retaining the factory speaker out to rear fill. Running new wire for front stage, i am going 9-speed wire from t-harness to input of dsp.
do i just T it up front for signal to DSP and leave it connected to car harness to power to rear speaker?
i assume it acts the same line out converter used to give say a signal to amp off rear channel.